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spectrophotometer

(Encyclopedia)spectrophotometer, instrument for measuring and comparing the intensities of common spectral lines in the spectra of two different sources of light. See photometry; spectroscope; spectrum. ...

Richter, Ludwig

(Encyclopedia)Richter, Ludwig rĭkhˈtər [key], 1803–84, German painter, illustrator, and etcher; son and pupil of the engraver Karl Richter (1770–1848). His characteristic paintings combine figure and landsc...

Curtiss, Glenn Hammond

(Encyclopedia)Curtiss, Glenn Hammond, 1878–1930, American inventor and aviation pioneer, b. Hammondsport, N.Y. He was a member of Alexander Graham Bell's Aerial Experiment Association (1907–9). In 1908 he made ...

Davisson, Clinton Joseph

(Encyclopedia)Davisson, Clinton Joseph dāˈvĭsən [key], 1881–1958, American physicist, b. Bloomington, Ill. He joined the engineering department of the Bell Telephone Laboratories in 1917. Davisson worked on t...

Jubal

(Encyclopedia)Jubal jo͞oˈbăl [key], in the Bible, son of Lamech and originator of musical instruments. ...

Reynolds, Debbie

(Encyclopedia) Reynolds, Debbie, 1932-2016, American actress, singer, and dancer, b. El Paso, Tx., as Mary Frances Reynolds. Reynolds’ family relocated from El Paso...

Gluck, Christoph Willibald von

(Encyclopedia)Gluck, Christoph Willibald von krĭsˈtôf vĭlˈēbält fən glo͝ok [key], 1714–87, German-born operatic composer. Gluck revolutionized opera by establishing lyrical tragedy as a unified vital art...

Lambeth Conference

(Encyclopedia)Lambeth Conference, convocation at Lambeth Palace, London, that brings together all the bishops in the Anglican Communion. It meets about every 10 years at the invitation of the archbishop of Canterbu...

barograph

(Encyclopedia)barograph, instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such a way that the v...

Abel, Sir Frederick Augustus

(Encyclopedia)Abel, Sir Frederick Augustus, 1826–1902, English chemist, an authority on explosives. He was professor of chemistry at the Royal Military Academy (1851–55) and chemist to the War Dept. and governm...